Andragogy refers to:

Learning -> The process of obtaining knowledge about something.
Learning is a lifelong process.
The learning style of different age groups differ from each other and are studied under different disciplines.

✅ Explanation:
The way adult learn a topic varies from how a child or an adolescent would learn.
Teaching methodologies differ when the age group of the classroom cohort varies.
Angragogy refers to the methologies of teaching to be adopted when the learners are adult.

🔴Additional Information:
Experiential learning -> Learning from real life experiences such as visiting a zoo or a museum.
Child learning -> This is the way in which children engage in learning.
Action learning -> Learning through problem solving is known as action learning.